Photocatalysis and Photoelectrochemical Properties of Tungsten Trioxide Nanostructured Films
Figure 7
H2 evolution under solar illumination of (a) anodic WO3 nanostructures obtained in 1 M Na2SO4 electrolyte containing 0.3 wt% NH4F for 15 min at 40 V and (b) anodic WO3 nanostructures obtained in 1 M Na2SO4 electrolyte containing 0.7 wt% NH4F for 15 min at 40 V.